Magnetic properties of quasi-one-dimensional antiferromagnets (Y1-xNdx)2BaNiO5 (x=1, 0.15)

被引：20

作者：

Popova, E. A. ^{[1
]}

Klimin, S. A. ^{[2
]}

Popova, M. N. ^{[2
]}

Klingeler, R. ^{[3
]}

Tristan, N. ^{[4
]}

Buechner, B. ^{[4
]}

Vasiliev, A. N. ^{[5
]}

机构：

[1] Natl Res Univ, Higher Sch Econ, Moscow Inst Elect & Math, Moscow 109028, Russia

[2] RAS, Inst Spect, Moscow 142190, Russia

[3] Heidelberg Univ, Kirchhoff Inst Phys, INF 227, D-69120 Heidelberg, Germany

[4] Leibniz Inst Solid State & Mat Res Dresden IFW Dr, D-01171 Dresden, Germany

[5] Moscow MV Lomonosov State Univ, Low Temp Phys Dept, Moscow 119991, Russia

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2013年 / 331卷

基金：

俄罗斯基础研究基金会;

关键词：

Haldane chain; Nickelate; Chain breaks; HALDANE-GAP; NEUTRON-DIFFRACTION; R2BANIO5; R; TRANSITION; EXCITATIONS; Y2BANIO5; ER; SUSCEPTIBILITY; GD; ND;

D O I：

10.1016/j.jmmm.2012.11.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present the magnetic properties of (Y(1-x)Ndx)(2)BaNiO5 (x = 1, 0.15) investigated by means of specific heat, magnetic susceptibility, and spectroscopic measurements. Magnetic ordering occurs at 47K and 13 K in the compounds with x = 1 and x = 0.15, respectively. We estimate the magnetic contribution of the eodymium subsystem to magnetization and specific heat using temperature dependences of the splitting of ground Kramers doublet of Nd3+ ion obtained from spectroscopic experiment. We show that both Nd-Ni and Nd-Nd interactions should be taken into account. An origin of the observed spinglass state below similar to 5 K and a contribution of the Ni chain breaks to the magnetization and specific heat are discussed. (C) 2012 ElsevierB.V. All rights reserved.

引用

页码：133 / 139

页数：7

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